Am Montag, 2. Oktober 2006 16:17 schrieb Alan Stern:
> On Mon, 2 Oct 2006, Oliver Neukum wrote:
>
> > Hi,
> >
> > I've tried the power save states 1 to 3, and got these results:
> > 1 -> 0
> > 2 -> 2
> > 3 -> 2
> >
> > What is causing this and is it acceptable?
>
> This is explained in Documentation/power/devices.txt. Briefly, in the
> power/state file all non-zero values are displayed as "2". Only the
> values 0, 2, or 3 are accepted for writing, and both 2 and 3 get mapped to
> PM_EVENT_SUSPEND.
>
> Alan Stern
In this case the use of language is very subtle. I quote:
In each device's directory, there is a 'power' directory, which
contains at least a 'state' file. Reading from this file displays what
power state the device is currently in. Writing to this file initiates
a transition to the specified power state, which must be a decimal in
the range 1-3, inclusive; or 0 for 'On'.
Regards
Oliver
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